Debt - Lines Of Credit (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Line of Credit Facility [Line Items]
Credit line capacity	$ 16,991,000
Balance outstanding	11,397,000	15,195,000
Itau Bank [Member]
Line of Credit Facility [Line Items]
Interest rate on borrowings	8.04%
Credit line capacity	3,000,000
Balance outstanding	2,207,000	2,738,000
Bank of Chile [Member]
Line of Credit Facility [Line Items]
Interest rate on borrowings	7.80%
Credit line capacity	3,000,000
Balance outstanding	1,967,000	2,292,000
BICE Bank [Member]
Line of Credit Facility [Line Items]
Interest rate on borrowings	5.50%
Credit line capacity	1,500,000
Balance outstanding	867,000	2,451,000
Corp Banca [Member]
Line of Credit Facility [Line Items]
Interest rate on borrowings	5.50%
Credit line capacity	0
Balance outstanding	28,000	1,248,000
BBVA Bank [Member]
Line of Credit Facility [Line Items]
Interest rate on borrowings	8.29%
Credit line capacity	2,500,000
Balance outstanding	1,230,000	2,823,000
Penta Bank [Member]
Line of Credit Facility [Line Items]
Interest rate on borrowings	9.48%
Credit line capacity	800,000
Balance outstanding	992,000	833,000
Security Bank [Member]
Line of Credit Facility [Line Items]
Interest rate on borrowings	7.56%
Credit line capacity	1,500,000
Balance outstanding	1,063,000	0
BCI [Member]
Line of Credit Facility [Line Items]
Interest rate on borrowings	5.50%
Credit line capacity	1,000,000
Balance outstanding	1,216,000	0
Estado Bank [Member]
Line of Credit Facility [Line Items]
Interest rate on borrowings	6.88%
Credit line capacity	2,000,000
Balance outstanding	1,732,000	1,963,000
Sabadell Bank [Member]
Line of Credit Facility [Line Items]
Interest rate on borrowings	7.60%
Credit line capacity	203,000
Balance outstanding	0	3,000
Bilbao Vizcaya Bank [Member]
Line of Credit Facility [Line Items]
Interest rate on borrowings	4.90%
Credit line capacity	406,000
Balance outstanding	91,000	377,000
Banco Popular [Member]
Line of Credit Facility [Line Items]
Interest rate on borrowings	8.25%
Credit line capacity	406,000
Balance outstanding	0	260,000
Santander Bank [Member]
Line of Credit Facility [Line Items]
Interest rate on borrowings	6.00%
Credit line capacity	203,000
Balance outstanding	0	0
Banesto [Member]
Line of Credit Facility [Line Items]
Interest rate on borrowings	5.80%
Credit line capacity	203,000
Balance outstanding	4,000	163,000
Banca March [Member]
Line of Credit Facility [Line Items]
Interest rate on borrowings	6.25%
Credit line capacity	270,000
Balance outstanding	$ 0	$ 44,000